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Finding the Fourth Proportional to 71,525.34, 98,703.09 and 39,693.42

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Solution

The fourth proportional to 71,525.34, 98,703.09 and 39,693.42 is: 54,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,525.34 : 98,703.09 = 39,693.42 : x
  2. Step 2: Convert to fraction form
    71,525.34/98,703.09 = 39,693.42/x
  3. Step 3: Cross multiply
    71,525.34x = 98,703.09 × 39,693.42
  4. Step 4: Simplify right side
    71,525.34x = 3,917,863,206.67
  5. Step 5: Solve for x
    x = 3,917,863,206.67/71,525.34
  6. Step 6: Final answer
    x = 54,775.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.